Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Christopher Raymond Grajewski — 4 Patents in 2021

Amazon: 4 patents #208 of 4,535Top 5%
Sammamish, WA: #50 of 634 inventorsTop 8%
Washington: #870 of 13,672 inventorsTop 7%
Overall (2021): #52,694 of 548,734Top 10%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11087274 System to detect event at an inventory location Camerin Cole Hahn, Qicai Shi, Vinod L. Hingorani, Elizabeth Ann Zitzer, Somasundaram Niranjayan 2021-08-10
11068841 RFID enabled and location aware pallet mover Tak Keung Joseph Lui, Oleg Kantor, David Bruce McCalib, Jr., Alton Paul Werronen 2021-07-20
11057751 User identification system using directional antennas and cameras Somasundaram Niranjayan, Camerin Cole Hahn, Qicai Shi, Matthew R. Perkins 2021-07-06
10969461 Electromagnetic tracking of moveable device with orientation determination Nathan Pius O'Neill, Nikolai Orlov 2021-04-06